Expression-box.



J. HATTEMER EXPRESSION BOX.

APPLIOATION FILED MAY 3, 1907.

Patented Nov. 3,1908.

hskws Kowwww x JUSTUS HATTEMER,

OF NEW YORK, N. Y., ASSIGN OR TO HARDMAN, PEOK & COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

EXPRESSION-BOX.

Specification of Letters Patent.

Patented Nov. 3, 1908.

Application filed. m a, 1907. Serial No. 371,670.

To all whom it may concern:

, Be it'known that I, Jusrus HATTEMER, a citizen of the United States, residing at New York, in the county of New York and State '5 of New York, have invented certain new and useful Improvements in Expression-Boxes;

and I do hereby declare the following to be a full,,clear, andpxact description of the invention, such as will enable others skilled in the art to which it appertains to make and use tl'iesame.

' This invention relates to expression boxes and has for an object to provide a device of a class embodying a divided action, and improved means of controlling the accent from the music sheet.

' A further object of the invention is to pro vide in a single expression box means whereby the accenting may be accomplished mechanically by the passage oi the music sheet or manually by the operator.

A further object of the invention is to provide in an expression box means for connecting the opposite ends of the action with either 5 high on low tension, and with means contained within the expression box whereby such change from the high tension to the lower tension may be accomplished manually by the operator or mechanically by the passage ol' the music sheet.

- NVith these and other objects in view, the

invention comprises certain novel constructions, combinations and arrangements of parts, aswill be hereinafter fully described and claimed.

The figure represents a side view 01' the expression box, one-half of which is in vertical section more clearly showing the mechanical features and also showing a conventional music sheet conventionally associated with the expression box.

' The expression boxl'orming the subject matter of this application comprises a casing 1 01' any approved size and term and disposed at any approved point within the instruinent. Withinthe casing 1 is disposed a partition 2 extending longitudinally of the casing 1 and a transverse partition 3 dividing the lower side of the expression box into two similar chambers 4 and 5.

The chambers 1 and 5'are in communication through. assages 6 and 7, res ectively, with a chain )er subjected to hig tension and tin chambers 4 and 5 are, therefore, sub- 55 jected to high tension. Above the chambers convenience of operation.

. spectively between the chambers 4 and 8,

4 and 5 are chambers 8 and 9, respectively, and between the chambers 8 and 9 1s a chamber 10, divided from the chambers 8 and 9 by partitions 11 and 12, and the chamber 10 in communication through the opening 13" with a low tension reservoir.

The partitions 11 and 12 are, respectively, provided with openings or passages 14 and 15, respectively, forming communication between the chambers 8 and 10, and the chambers 9 and 10, and the said openings normally closed by flap valves 16 and 17.

The chambers 8 and 9, respectively, are in communication through passages 18 and 19 with opposite ends of the action, the said passages 18 and 19 bcing closed, when desired, in any approved manner, as by slide valves 20 and'21 controlled by a rod 22 extending longitudinally within and without the connecting member 23.

Between the chambers 4 and 8 and the chambers 5 and 9, respectively, are produced passages 24 and 25, forming' communication between said chambers, and valves 26 and 27 are, respectively, mounted upon stems Z8 and 29, which said stems extend through keepers 30 and 31, and are adapted to close the passages 24 and The valves 26 and 27 are controlled by pneumatics 30 and 31, res iectively, which said pneumatics are in communication through passages 32, and pipes 33 with any approved form of manually o )erated valve closure shown conventional y at 34 with a key'or button 35 for the It will be understood that in the right hand side of the figure shown in section the pipe 33 is cut away and that the assage 32 shown in section is not seen in 1316 left hand side of the drawing, which is in elevation. The chambers 36, beneath the-pneumatics 30 and 31, and into which the pouches are adapted to descend, I are in communication through passa 37 and bleeders 38 and 39 with the cham ers 4' and 5, so that when the valve 34 is closed the 100 tension upon both sides of the pncumatics 30 and 31 is equalized and the valves 26 and 27 descend "by gravity, opening the passages 24 and 25 and establishing communicrfion reand the chambers 5 and 9. When the valve 34 is open in normal position, as shown in the figure, the atmospheric pressure upon the lower side of the pouches 30 and 31, acting against the exhaust above the said pouches 3.10

pheric air to the chamber 30,

holds the valves 26 and 27 closed. Between the chambers 4 and S and the chambers 5 and 9 are also passages 40 and 41 similar to the passages 24 and 25 which also form communication between the chambers 4 and 8, and the chambers 5 and 9. Associated with the openings 40 and 41 are valves 42 and 43, respectix ely, carried upon valve stems 44 and 45, extending through neepe'rs '46 and 47. The stems 44 and 45 are controlled by pneumatics 48 and 49 disposed above chambers 50, which said chambers 50 are in communication through passages 51 and tubes 52 and 53 with opposite ends of the tracker bar 54. The chambers 50 are also in commimication through passages 55 and bleeders 56 with the chambers 4 and 5, whereby tension upon opposite sides of the pouches 48 and 49 are normally equalized.

The tracker bar 54 is provided with. openings 57 and 58, respectively, in communication with the tubes 52 and 53 and positioned for registry, respectively, with openings 59 and 60, formed at any convenient places as along the opposite edges of the music sheet shown conventionally at 61.

It will be noted that in the embodiment of the invention shown the valves 26 and 27 are disposed to engage the under side of the partition 2 and to close the o enings 24 and 25 from below, while the va. ves 42 and 43 are positioned to engagethe partition and close the openings from above. The reason for this arrangement is that in the mechanical operation of the accentor the valves 26 and 27 are to be normally closed and to remain closed by the 'ressure of the atmospheric air upon the URL er side of the pouches, while the valves 42 and 43 are to'remain 1 normally closed by gravit Y and to be opened only when the tension upon. the under side of the pouches 48 and 49 is relieved by the admission of atmospheric air through the tubes 52 and 53 by the passages of one of the openings 59 or 60 over the holes 57 or 58 of i the tracker bar. I

When all of the notes being played upon either end of the action are to be played Without accent, all of the valves 26, 27, 42, and 43 are closed and communication between the chambers 8 and 9 and the high tension exhaust reservoir therefor cut oil" and communication established with the low tension reservoir throughthe opening 13, which serves to draw the llap valve 16 or 17 out of position and to admit the passage of air, as indicated by the dotted arrows.

When any particular notes are to be aid 5 cenied manually the valve 34 is closed, thereby preventing the admission of atmosand by reason oi the blceder 39 tension u on opposite sides of the pouches 30 is equa ized and the valve 26 bills by gravity, thereby establishing communication between the, chambers 4 l and 8. The excess tension from the chamher 4 and the chamber 8 closes the flu p valve 16 and the chamber 8 is, therefore, in communication with the high tension and the ,note indicated by the note opening in the sheet which passes the tracker bar at that instant is, therefore, accented. The accenting mechanically is accomplished in a similar manner, except that as one ofthe openings 60 passes over the opening 58 atmospheric air is admitted through the said opening 58 and tube 53, and the chambers 50 i to force the pneumatic 49 to raise the valve 1 43, establishing conmnmieation between the high tension chamber 5 and the chamber S), thereby closing the ilap valve 17 and forming communication from the action, as indicated by the. full line arrows. It will thus be seen that the aecenting may be accomplished either manually or mechanically, and when done mechanically the exhaust from the action follows the direction indicated by the full line. arrows, while when done manually, it follows the direction indieated by the broken arrows, the dotted arrows indicating the passage established l l or the soft or unaccented notes.

In the usual operation o'l the device above described it is intended to employ primaries interposed between the tubes extending ilroni the openings in the tracker bar but as such primaries and their employment are old it has not been thought necessary to illustrate or describe their use here, the simplest form only being shown.

hat I claim is:

1. The combination with a divided action, provided with high and low tension reservoirs, of a chamber in cmmmunication with the low tension reservoir, clnilmbers in communication with the high tension reservoir, intermediate chambers in communication with both the high and low tension chambers, means adapted to close a part of the communication between the high tension chamber and the intermediate chamber and held by gravity normally closed, and means for closing the remaining communication between said chambers, and held by atmospheric pressure normally closed.

The combination with an action, ol a high tension reservoir and a low tension res ervoir, a chamber in communication with the high tension reservoir, a chamber in communication with the low tension reservoir, arhamber in communication with both the 5 high and low tension chambers, a valve adapted to (lose part ol the conmmnimition between the high tension clnimbtv and the tintermediate chamber, means to hold said i val. e by atmospheric )rcssurc closed, a ser- 0nd valve adapted to close by gravity the re maining communication between said chain-- hers, and means actuated by atmospheric pressure to hold said valve open.

llllr lib ilk

3. The combination with an action, of a' high tension reservoir and a low tension reservoir, a chamber in communication with the low tension reservoir, a chamber in communciation w1th the high tension reservoir, a

chamber in communication with both the high and low tension chambers, a valve positioned to close part of the communication between the high tension chamber and the intermediate chamber, means to hold said communication between said, chambers by gravity, means actuated by atmospheric pressure adapted to hold said valve open, and mechanical means adapted to interru t the atmospheric pressure and permit t e valve to normally close.

4. In an expression box, an action, a chamber in communication with the action, a chamher in communication with said first-men tioned chamber'and also in communication with a source of aerostatic tension, a valve positioned to close part of the communication between the chambers and adapted to be opened by gravity means for applyin atmospheric pressure to hold the valve closed? means manually operable to interru t atmospheric pressure to permit the va veto move to open position, a second valve positioned to close the remaining portion of the communication and adapted to be closed by gravity, means to apply atmospheric pres sure to'hold said valve in open position, and mechanical means for interrupting the application of atmospheric pressure.

5. In an expression box, an action, a source of aerostatic tension, a chamber in communication with the source of aerostatic tension, a chamber in communication with the action and with the first-mentioned chamber through two passages, valves disposed to close the two passages, means to aply' atmospheric pressure to one valve to liold the same normally closed, manually operable means adapted to interrupt the atmosp'heric pressure and permit the valve to open by gravity, means to apply atmospheric pressure to be other valve to hold same open, and mechanical means adapted to interrupt the atmospheric pressure to permit the said valve to move to a normally closed position. In testimony whereof I aflix my singature mpresence of two Witnesses.

JUSTUS HATTEMER.

Witnesses:

\ E. A. SCHMITT,

JAMES W. KELLY. 

